1)generally used to express signs of anger, failure, rage, etc
2)used to express hatred/annoyance,
3)used to end an awkward silence/awkward moments/statement
4)used to express emotions about ex boyfriends or prissy fake people

example: FUCKSHIT that fucking whore
or, (person slams finger in door):FUCKSHIT
or,dialogue: i want you...do you want me? uhhhhhhh FUCKSHIT i have to go. talk to you soon?